Attachment for dental pluggers.



INVENTOI? Il .fd I

APPLICATION FILED MAY 12, 1913.

Patented Sept. 23

T STATES PA'TNT FETCH FREDERICK C. LAMBERT, OF NEW YORK, N. Y., ASSIGNOR OF ONE-'HALF TO GEORGE J. KOCH, 0F NEW YORK, N. Y.

ATTACHMENT FOR DENTAL PLUGGERS.

1o all whom z5 may conce/rn.'

Be it known that I, Fnnmnnok C. LAM- nnn'r, a citizen et' the United States, and a resident ott the city oit New York, borough ot' the Bronx, in the county and State ot New York, have invented a new and lmproved Attachment tor Dental lluggers, ot which the following is a full, clear, and exact description.

The object of the invention is to provide a new and inuproved attachment for dent al pluggers and arranged to permit the user to conveniently and quickly place tl 'f attachment in position on the dental plugge r whenever it is desired to use a plugging tool standing at an angle to the axis ot the dental plugger.

In order to accomplish the desired result use is made oit an attachment having a tool driven from the reciprocating spindle oi the dental plugger and mounted to reciprocate at an angle to the axis ot the dental plugger.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of re'terence in dicate corresponding parts in all the views.

Figure l is a side elevation of a dental plugger provided with the attachment shown in section; Fig. 2 is a plan view ot the at tachment, part oi the casing being shown in section; Fig. 3 is an enlarged cross section ot the coupling itor attachment to the dental plugger; and Fig. il is an enlarged sectional side elevation showing .more particularly the connection of the attachment with the spindle of the dental plugger.

The attachment is mounted on a casing or 'frame A adapted to be coupled by a coupling B to the shell or casing C oit a dental pluggcr ot any approved construction,and which dental plugger is connected by a flexible shaitt with a source of power and is provided with the usual too'lfcarrying spindle D and the usual mechanism whereby the tool is caused to strike a series o'l blows in rapid succession. The iorward end oit the spindle l) ot' the dental plugger is provided with an internal screw thread E into which screws the threaded end 14" of a shank F mounted to slide in a bearing A screwed or otherwise secured in the casing A. On the shank F secured an angular arm G engaging the `free end of a lever H fulcruined at H in the casing A, as

Specification of Letters Patent.

Application filed May' 12, 1913.

f ateni ed Sept. 23, i913.

Sera1No.76/,173.

plainly indicated in Fig. '1 lhe lever Il is provided with an angular arm llt standing approximately parallel to the axis ot the dental plugger and engaging a striking pin i. held on the inner end ot a tool holder 'I carrying at ils lower outer end a removable tool .l in the form ot a pluggcr, hammer or the like, according to the use to be made oi the tool. The tool holder l extends at a right angle to the axis of the dental plugger, and the tool holder is mounted to slide in a bearing l( held or 'lormed on the casing A. The inner end ol. the bea ring l provided with a counter bore K containing a |spring .L coiled around the tool holder I and almtting against a collar N screwed or otherwise secured to the striking pin I so that the said striking pin is held in contact with the arm ll2 oil.l the lever il. The inward movement ot' the tool holder I is limited by a collar l held on the outer end of the tool holder and adapted to abut against the outer end of the bearing K. When the casing A lis attached to the dental plugger C and thelattcr is actuated in the usual manner then the blows given to the spindle l) are also inuiarted to the shank F and the arln (lr which latter delivers the blows to the lever lll, and the latter in turn by the arm 112 delivers the blows to the striking pin l oi the tool holder l so that the tool J delivers the blows to the desired part intended to receive the blows. It is understood that the return movement o'l the tool holder l is caused by the spring L.

By arranging the tool holder I and the tool J in the manner described, the tools can be readily used in places practically inaccessible by the pluggers or hammers attached to the spindle l) oit the dental plugger, owing to the hammer J standing at a right angle to the, axis of the power mallet.

',lhe coupling 'l 'lor connecting the casing A to the casing (l o'lI the dental plugger, preferably, consists oil a two-part member B ttting onto the reduced concave neck C of the easing C, and the said twopart member li is provided with an exterior screw thread B2 onto which screws the coupling nut B3 having a flange B mounted to turn on the tubular end A2 ot the casing A and abutting against the shoulder A on the said end A. ily the arrangement described, the attachment can be conveniently coupled to the dental plugger as now generally constructed by simply placing the two-part member B onto the neck C and then screwing the nut B3 onto the said two-part member B to fasten the casing A in position on the end of the casing C, as plainly indicated in the drawings. The parts of the member'B are preferably fastened together by dovvels B5, as indicated in Fig. 3.

From the foregoing it Will be seen that the attachment can be very quickly coupled to the dental plugger and When in use the tool strikes blows in a direction at a right Y angle to the aXis of the dental plugger.A

Having thus described my invention, I claim as nevvV7 and desire to secure by Letters Patent:

In combination with a dental plugger having a maincasing provided With a concave neck and a tool spindle mounted to reciprocate in the said main casing, of an attachment casing, a coupling nut held on the said attachment casing, a two-part cou-v pling member fitting on the said concave neck and provided with an exterior screW thread engaged by the said coupling nut, a driving member slidable in the said attachment casing and removably attached t0 the said spindle, an angular arm on the said driving member, a lever fulcrumed in the said attachment casing and engaged by the said angular arm, and a spring-pressed tool holder mounted to reciprocate at an angle to the axis of the said driving member, the said tool holder being engaged by the said lever. Y Y

yln testimony whereof l have signed my name to this specification in the presence of tivo subscribing Witnesses. t

'FREDERICK C. LAMBERT. Witnesses:

Trino. G. HosTER, Jr., PI-riLir D. RoLLHAUs.

Copies vof this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C.

soY 

